CDL Hazardous Materials Practice Test

What requirement exists for transporting compressed gases?

1. Cylinders must be transported unbraced

2. Cylinders must be secured in boxes or racks

3. Cylinders can be loose in the vehicle

4. Cylinders do not need any restraints

The correct answer is: Cylinders must be secured in boxes or racks

When transporting compressed gases, it is essential to secure the cylinders properly to prevent movement during transit. This requirement is vital because unsecured cylinders can shift and potentially fall or roll around within the vehicle, leading to accidents, leaks, or even ruptures which pose serious risks to safety. Securing the cylinders in boxes or racks ensures that they are stable and protected, minimizing the chance of damage to the cylinders themselves as well as reducing the risk of injury to the driver and others on the road. Proper restraints help maintain control of the load and can significantly prevent hazards associated with compressed gases. This requirement aligns with safety regulations and best practices for transporting hazardous materials, emphasizing the need for stability and safety during transit to protect both the environment and public safety.